There was a series of TOTP2 in 2006/7 too, after the main show had ended, which had a fair few new performances on it, mostly made for the international versions which were still in production at the time.
I keep reading people on various TOTP discussion boards insisting BBC4 should stop at the 1991 revamp because in their opinion that's when the show "ended", music got "rubbish" and they've decided people won't be interested in watching the repeats any more from that point. Speak for yourself, I'm very interested in seeing the 90s episodes, even if the "year zero" episodes will be a hard watch, plus we get a few years of a rejuvanated TOTP in 1994-97 once we come out the other side of it. Part of the thing with music is so many people think their opinions on it are an authority, and when they think music became "rubbish" and nobody else will be interested is the one true opinion.
Some parts of that I'm afraid I have to agree with, though I expect it's largely an age thing. For me, TOTP as I had always known it did come to end in 1991, and I find the music scene from around 1991/92 onwards much less interesting. The 1994-97 era, though marginally better than 1991-94, still doesn't do much for me either.
I've always been keen for the repeats to get at least as far as October 1991, and I'm perfectly happy for them to continue beyond that point. I can't see why anyone should begrudge that - they can just simply not watch if they're not interested - and I will probably continue to watch for as long as they go on (although I had largely given up first time around by 2004). It's just that I wouldn't be crestfallen if they didn't go beyond 1991.
(And I know exactly what you mean about those posters on a certain other forum who regard their own personal opinion as the correct, definitive one, which is why I have to skip past whole chunks of the TOTP threads over there).